根据YB-370规定,耐火材料抗热震性测定时,加热至多高温度时,马上置于冷水中,并反复进行()。
A.900℃
B.1000℃
C.1100℃
D.1200℃
参考答案:C
—Why do you ____ the radio? I can’t hear the light music clearly.
—I’m afraid of waking the baby up.
A.turn down
B.turn on
C.turn off
D.turn up
畜禽屠宰前有哪些卫生要求?